85437821435 has 32 divisors (see below), whose sum is σ = 103911206400. Its totient is φ = 67434716160.

The previous prime is 85437821419. The next prime is 85437821449. The reversal of 85437821435 is 53412873458.

It is not a de Polignac number, because 85437821435 - 2⁴ = 85437821419 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91967051 + ... + 91967979.

It is an arithmetic number, because the mean of its divisors is an integer number (3247225200).

Almost surely, 2^85437821435 is an apocalyptic number.

85437821435 is a deficient number, since it is larger than the sum of its proper divisors (18473384965).

85437821435 is a wasteful number, since it uses less digits than its factorization.

85437821435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811.

The product of its digits is 3225600, while the sum is 50.

The spelling of 85437821435 in words is "eighty-five billion, four hundred thirty-seven million, eight hundred twenty-one thousand, four hundred thirty-five".